Question about git rebase --onto

It seems to me that:

   $ git co topic
   $ git rebase --onto master topic~2 topic

Used to do the job and rebase the topic branch as expected. Today when I
tried with 1.7.0.rc1.10.gb8bb after the rebase above I was left on a
detached head.

Is my recollection wrong? Has this been changed recently?

Thanks,
Pascal.

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--| Pascal Obry                           Team-Ada Member
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